The hidden side of globalization

In debates over globalization, much attention is given to so-called 'North-South' relationships. Often, data on 'South-South' exchanges it too limited to say much. A new paper on Global Migration of the Highly Skilled by Theo Dunnewijk of United Nations University helps shed some new light on 'South-South' brain drain/brain strain/brain circulation (Hat tip: Giulio Quaggiotto). Previous datasets had overlooked diasporas of highly skilled workers in these countries:

• South Africa originating in Zimbabwe, Botswana, Namibia and Lesotho;
• Russia from Kazakhstan, Ukraine and Belarus;
• Ukraine, from Brunei Darussalam;
• Czechoslovakia (former) from Iran;
• Malaysia from China and India;
• Latvia from Israel;
• Romania from Moldova;
• Jordan from Palestine Autonomous Region;
• Tajikistan from Uzbekistan;
• Bulgaria from Greece

Is this brain drain, brain strain, or brain circulation? Dunnewijk doesn't tell us - a topic for another paper, perhaps.